./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 99c02e26cc69c81635e61f874ccaf79837a3339fa533477441a437bf8690e003 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:02:05,893 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:02:05,951 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-29 04:02:05,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:02:05,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:02:05,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:02:05,976 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:02:05,976 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:02:05,977 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:02:05,977 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:02:05,978 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:02:05,978 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:02:05,979 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:02:05,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:02:05,980 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:02:05,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:02:05,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:02:05,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:02:05,982 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:02:05,983 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:02:05,983 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:02:05,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:02:05,986 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:02:05,987 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:02:05,987 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:02:05,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:02:05,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:02:05,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:02:05,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:02:05,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:02:05,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:02:05,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:02:05,990 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:02:05,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:02:05,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:02:05,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:02:05,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:02:05,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:02:05,992 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99c02e26cc69c81635e61f874ccaf79837a3339fa533477441a437bf8690e003 [2023-11-29 04:02:06,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:02:06,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:02:06,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:02:06,241 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:02:06,241 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:02:06,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i [2023-11-29 04:02:09,056 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:02:09,254 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:02:09,255 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i [2023-11-29 04:02:09,265 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/data/c89e20dae/eff032b1b2354e3bb8602d517ca7a544/FLAGb2a5a3309 [2023-11-29 04:02:09,276 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/data/c89e20dae/eff032b1b2354e3bb8602d517ca7a544 [2023-11-29 04:02:09,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:02:09,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:02:09,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:02:09,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:02:09,284 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:02:09,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a08b8e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09, skipping insertion in model container [2023-11-29 04:02:09,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,330 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:02:09,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:02:09,562 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:02:09,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:02:09,624 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:02:09,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09 WrapperNode [2023-11-29 04:02:09,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:02:09,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:02:09,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:02:09,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:02:09,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,667 INFO L138 Inliner]: procedures = 110, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2023-11-29 04:02:09,667 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:02:09,668 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:02:09,668 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:02:09,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:02:09,678 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,681 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,694 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2023-11-29 04:02:09,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:02:09,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:02:09,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:02:09,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:02:09,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09" (1/1) ... [2023-11-29 04:02:09,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:02:09,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:02:09,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:02:09,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:02:09,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:02:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:02:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:02:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:02:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:02:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:02:09,878 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:02:09,880 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:02:10,010 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:02:10,035 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:02:10,036 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 04:02:10,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:02:10 BoogieIcfgContainer [2023-11-29 04:02:10,036 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:02:10,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:02:10,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:02:10,042 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:02:10,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:02:09" (1/3) ... [2023-11-29 04:02:10,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ecba12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:02:10, skipping insertion in model container [2023-11-29 04:02:10,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:02:09" (2/3) ... [2023-11-29 04:02:10,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ecba12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:02:10, skipping insertion in model container [2023-11-29 04:02:10,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:02:10" (3/3) ... [2023-11-29 04:02:10,045 INFO L112 eAbstractionObserver]: Analyzing ICFG count_down-alloca-2.i [2023-11-29 04:02:10,064 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:02:10,064 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-29 04:02:10,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:02:10,115 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@60b6df7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:02:10,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-29 04:02:10,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 2.125) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:10,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 04:02:10,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:02:10,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 04:02:10,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 04:02:10,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:02:10,129 INFO L85 PathProgramCache]: Analyzing trace with hash 100821840, now seen corresponding path program 1 times [2023-11-29 04:02:10,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:02:10,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147556401] [2023-11-29 04:02:10,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:10,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:02:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:10,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:02:10,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147556401] [2023-11-29 04:02:10,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147556401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:02:10,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:02:10,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:02:10,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634092612] [2023-11-29 04:02:10,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:02:10,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:02:10,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:02:10,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:02:10,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:02:10,413 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 2.125) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:02:10,455 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-11-29 04:02:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:02:10,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-29 04:02:10,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:02:10,465 INFO L225 Difference]: With dead ends: 26 [2023-11-29 04:02:10,465 INFO L226 Difference]: Without dead ends: 25 [2023-11-29 04:02:10,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:02:10,469 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:02:10,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:02:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-29 04:02:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-29 04:02:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:10,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2023-11-29 04:02:10,500 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 5 [2023-11-29 04:02:10,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:02:10,500 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2023-11-29 04:02:10,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:10,501 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2023-11-29 04:02:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 04:02:10,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:02:10,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:02:10,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:02:10,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 04:02:10,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:02:10,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1894450114, now seen corresponding path program 1 times [2023-11-29 04:02:10,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:02:10,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837199393] [2023-11-29 04:02:10,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:10,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:02:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:10,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:02:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837199393] [2023-11-29 04:02:10,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837199393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:02:10,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:02:10,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:02:10,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856647566] [2023-11-29 04:02:10,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:02:10,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:02:10,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:02:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:02:10,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:02:10,589 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:10,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:02:10,615 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2023-11-29 04:02:10,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:02:10,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 04:02:10,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:02:10,617 INFO L225 Difference]: With dead ends: 21 [2023-11-29 04:02:10,617 INFO L226 Difference]: Without dead ends: 21 [2023-11-29 04:02:10,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:02:10,619 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:02:10,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 16 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:02:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-29 04:02:10,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-29 04:02:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.5625) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:10,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-11-29 04:02:10,624 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 7 [2023-11-29 04:02:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:02:10,624 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-11-29 04:02:10,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:10,625 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-11-29 04:02:10,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 04:02:10,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:02:10,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:02:10,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:02:10,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 04:02:10,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:02:10,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1894450113, now seen corresponding path program 1 times [2023-11-29 04:02:10,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:02:10,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513615740] [2023-11-29 04:02:10,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:10,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:02:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:10,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:02:10,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513615740] [2023-11-29 04:02:10,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513615740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:02:10,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:02:10,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:02:10,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026805404] [2023-11-29 04:02:10,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:02:10,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:02:10,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:02:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:02:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:02:10,891 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:11,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:02:11,044 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2023-11-29 04:02:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:02:11,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 04:02:11,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:02:11,046 INFO L225 Difference]: With dead ends: 43 [2023-11-29 04:02:11,047 INFO L226 Difference]: Without dead ends: 43 [2023-11-29 04:02:11,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:02:11,048 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 50 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:02:11,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 82 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:02:11,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-29 04:02:11,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 26. [2023-11-29 04:02:11,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-11-29 04:02:11,055 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 7 [2023-11-29 04:02:11,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:02:11,055 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-11-29 04:02:11,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:11,055 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-11-29 04:02:11,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 04:02:11,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:02:11,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:02:11,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:02:11,057 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 04:02:11,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:02:11,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1837191811, now seen corresponding path program 1 times [2023-11-29 04:02:11,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:02:11,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470942223] [2023-11-29 04:02:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:11,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:02:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:11,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:02:11,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470942223] [2023-11-29 04:02:11,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470942223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:02:11,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:02:11,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:02:11,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661231842] [2023-11-29 04:02:11,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:02:11,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:02:11,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:02:11,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:02:11,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:02:11,247 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:11,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:02:11,324 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2023-11-29 04:02:11,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:02:11,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 04:02:11,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:02:11,326 INFO L225 Difference]: With dead ends: 29 [2023-11-29 04:02:11,326 INFO L226 Difference]: Without dead ends: 29 [2023-11-29 04:02:11,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:02:11,328 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 54 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:02:11,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 16 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:02:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-29 04:02:11,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2023-11-29 04:02:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-11-29 04:02:11,333 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 7 [2023-11-29 04:02:11,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:02:11,333 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-11-29 04:02:11,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:11,333 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-11-29 04:02:11,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 04:02:11,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:02:11,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:02:11,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:02:11,335 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 04:02:11,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:02:11,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1691505654, now seen corresponding path program 1 times [2023-11-29 04:02:11,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:02:11,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803525392] [2023-11-29 04:02:11,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:11,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:02:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:11,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:02:11,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803525392] [2023-11-29 04:02:11,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803525392] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:02:11,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057767192] [2023-11-29 04:02:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:11,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:02:11,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:02:11,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:02:11,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:02:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:11,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:02:11,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:02:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:11,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:02:11,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057767192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:02:11,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:02:11,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 04:02:11,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228814237] [2023-11-29 04:02:11,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:02:11,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:02:11,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:02:11,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:02:11,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:02:11,540 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:11,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:02:11,575 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2023-11-29 04:02:11,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:02:11,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 04:02:11,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:02:11,576 INFO L225 Difference]: With dead ends: 43 [2023-11-29 04:02:11,576 INFO L226 Difference]: Without dead ends: 43 [2023-11-29 04:02:11,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:02:11,578 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:02:11,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 44 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:02:11,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-29 04:02:11,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2023-11-29 04:02:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.44) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:11,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-11-29 04:02:11,583 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 10 [2023-11-29 04:02:11,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:02:11,583 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-11-29 04:02:11,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:11,583 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-11-29 04:02:11,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 04:02:11,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:02:11,584 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:02:11,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:02:11,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:02:11,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 04:02:11,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:02:11,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1011447284, now seen corresponding path program 1 times [2023-11-29 04:02:11,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:02:11,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320864326] [2023-11-29 04:02:11,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:11,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:02:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:12,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:02:12,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320864326] [2023-11-29 04:02:12,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320864326] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:02:12,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512321323] [2023-11-29 04:02:12,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:12,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:02:12,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:02:12,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:02:12,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:02:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:12,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 04:02:12,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:02:12,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2023-11-29 04:02:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:12,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:02:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:12,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512321323] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:02:12,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:02:12,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-29 04:02:12,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580492038] [2023-11-29 04:02:12,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:02:12,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:02:12,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:02:12,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:02:12,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:02:12,514 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:12,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:02:12,762 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-11-29 04:02:12,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:02:12,763 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 04:02:12,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:02:12,763 INFO L225 Difference]: With dead ends: 45 [2023-11-29 04:02:12,764 INFO L226 Difference]: Without dead ends: 45 [2023-11-29 04:02:12,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:02:12,765 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 100 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:02:12,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 46 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:02:12,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-29 04:02:12,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 27. [2023-11-29 04:02:12,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.391304347826087) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:12,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-11-29 04:02:12,770 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 10 [2023-11-29 04:02:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:02:12,770 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-11-29 04:02:12,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:12,770 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-11-29 04:02:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 04:02:12,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:02:12,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:02:12,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:02:12,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:02:12,972 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 04:02:12,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:02:12,972 INFO L85 PathProgramCache]: Analyzing trace with hash -897115286, now seen corresponding path program 1 times [2023-11-29 04:02:12,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:02:12,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429551283] [2023-11-29 04:02:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:12,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:02:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:13,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:02:13,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429551283] [2023-11-29 04:02:13,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429551283] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:02:13,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760896886] [2023-11-29 04:02:13,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:13,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:02:13,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:02:13,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:02:13,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:02:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:13,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:02:13,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:02:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:13,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:02:13,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2023-11-29 04:02:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:13,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760896886] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:02:13,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:02:13,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 04:02:13,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031060769] [2023-11-29 04:02:13,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:02:13,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:02:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:02:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:02:13,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:02:13,261 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:13,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:02:13,362 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2023-11-29 04:02:13,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:02:13,362 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-29 04:02:13,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:02:13,363 INFO L225 Difference]: With dead ends: 37 [2023-11-29 04:02:13,363 INFO L226 Difference]: Without dead ends: 37 [2023-11-29 04:02:13,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:02:13,364 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 84 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:02:13,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 49 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:02:13,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-29 04:02:13,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2023-11-29 04:02:13,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2023-11-29 04:02:13,368 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 11 [2023-11-29 04:02:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:02:13,368 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-11-29 04:02:13,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:13,368 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2023-11-29 04:02:13,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 04:02:13,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:02:13,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:02:13,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:02:13,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:02:13,574 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 04:02:13,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:02:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2040771286, now seen corresponding path program 1 times [2023-11-29 04:02:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:02:13,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622172006] [2023-11-29 04:02:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:13,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:02:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:02:13,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:02:13,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622172006] [2023-11-29 04:02:13,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622172006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:02:13,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:02:13,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:02:13,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49643406] [2023-11-29 04:02:13,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:02:13,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:02:13,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:02:13,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:02:13,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:02:13,613 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:13,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:02:13,640 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2023-11-29 04:02:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:02:13,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-29 04:02:13,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:02:13,641 INFO L225 Difference]: With dead ends: 32 [2023-11-29 04:02:13,641 INFO L226 Difference]: Without dead ends: 32 [2023-11-29 04:02:13,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:02:13,642 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:02:13,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 18 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:02:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-29 04:02:13,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2023-11-29 04:02:13,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-11-29 04:02:13,646 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 12 [2023-11-29 04:02:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:02:13,646 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-11-29 04:02:13,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-11-29 04:02:13,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 04:02:13,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:02:13,647 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:02:13,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:02:13,647 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 04:02:13,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:02:13,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1319817091, now seen corresponding path program 1 times [2023-11-29 04:02:13,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:02:13,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947979621] [2023-11-29 04:02:13,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:13,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:02:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:02:13,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:02:13,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947979621] [2023-11-29 04:02:13,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947979621] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:02:13,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31738328] [2023-11-29 04:02:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:13,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:02:13,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:02:13,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:02:13,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:02:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:13,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:02:13,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:02:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:02:13,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:02:13,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31738328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:02:13,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:02:13,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 04:02:13,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059640232] [2023-11-29 04:02:13,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:02:13,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:02:13,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:02:13,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:02:13,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:02:13,807 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:13,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:02:13,848 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-11-29 04:02:13,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:02:13,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 04:02:13,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:02:13,849 INFO L225 Difference]: With dead ends: 38 [2023-11-29 04:02:13,849 INFO L226 Difference]: Without dead ends: 38 [2023-11-29 04:02:13,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:02:13,850 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:02:13,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 36 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:02:13,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-29 04:02:13,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2023-11-29 04:02:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:13,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2023-11-29 04:02:13,854 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 15 [2023-11-29 04:02:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:02:13,854 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2023-11-29 04:02:13,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:13,854 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2023-11-29 04:02:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 04:02:13,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:02:13,855 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:02:13,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:02:14,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:02:14,055 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 04:02:14,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:02:14,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1964032955, now seen corresponding path program 1 times [2023-11-29 04:02:14,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:02:14,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661354726] [2023-11-29 04:02:14,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:14,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:02:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:14,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:02:14,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661354726] [2023-11-29 04:02:14,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661354726] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:02:14,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40812448] [2023-11-29 04:02:14,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:14,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:02:14,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:02:14,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:02:14,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:02:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:14,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:02:14,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:02:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:14,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:02:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:14,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40812448] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:02:14,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:02:14,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-29 04:02:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395520014] [2023-11-29 04:02:14,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:02:14,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:02:14,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:02:14,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:02:14,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:02:14,270 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:02:14,372 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2023-11-29 04:02:14,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:02:14,372 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 04:02:14,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:02:14,373 INFO L225 Difference]: With dead ends: 51 [2023-11-29 04:02:14,373 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 04:02:14,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:02:14,374 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:02:14,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 80 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:02:14,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 04:02:14,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2023-11-29 04:02:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 37 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2023-11-29 04:02:14,378 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 15 [2023-11-29 04:02:14,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:02:14,379 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2023-11-29 04:02:14,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:14,379 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2023-11-29 04:02:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 04:02:14,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:02:14,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:02:14,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:02:14,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 04:02:14,582 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 04:02:14,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:02:14,582 INFO L85 PathProgramCache]: Analyzing trace with hash 2035341943, now seen corresponding path program 1 times [2023-11-29 04:02:14,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:02:14,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369328542] [2023-11-29 04:02:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:14,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:02:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:02:14,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:02:14,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369328542] [2023-11-29 04:02:14,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369328542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:02:14,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:02:14,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:02:14,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435305943] [2023-11-29 04:02:14,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:02:14,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:02:14,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:02:14,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:02:14,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:02:14,681 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:14,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:02:14,693 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2023-11-29 04:02:14,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:02:14,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-29 04:02:14,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:02:14,694 INFO L225 Difference]: With dead ends: 37 [2023-11-29 04:02:14,694 INFO L226 Difference]: Without dead ends: 21 [2023-11-29 04:02:14,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:02:14,695 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:02:14,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:02:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-29 04:02:14,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-29 04:02:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-11-29 04:02:14,698 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 16 [2023-11-29 04:02:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:02:14,698 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-11-29 04:02:14,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:14,698 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-11-29 04:02:14,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 04:02:14,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:02:14,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:02:14,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:02:14,699 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 04:02:14,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:02:14,699 INFO L85 PathProgramCache]: Analyzing trace with hash 551985482, now seen corresponding path program 2 times [2023-11-29 04:02:14,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:02:14,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039131715] [2023-11-29 04:02:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:02:14,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:02:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:02:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:02:14,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:02:14,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039131715] [2023-11-29 04:02:14,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039131715] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:02:14,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689148965] [2023-11-29 04:02:14,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:02:14,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:02:14,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:02:14,834 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:02:14,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:02:14,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:02:14,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:02:14,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:02:14,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:02:14,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2023-11-29 04:02:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:02:15,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:02:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:02:15,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689148965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:02:15,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:02:15,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 18 [2023-11-29 04:02:15,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34943343] [2023-11-29 04:02:15,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:02:15,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:02:15,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:02:15,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:02:15,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:02:15,549 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:02:15,808 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2023-11-29 04:02:15,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:02:15,809 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-29 04:02:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:02:15,809 INFO L225 Difference]: With dead ends: 26 [2023-11-29 04:02:15,809 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 04:02:15,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2023-11-29 04:02:15,810 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 63 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:02:15,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 44 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:02:15,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 04:02:15,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 04:02:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 04:02:15,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2023-11-29 04:02:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:02:15,812 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 04:02:15,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:15,812 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 04:02:15,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 04:02:15,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-11-29 04:02:15,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-11-29 04:02:15,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-11-29 04:02:15,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-11-29 04:02:15,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-11-29 04:02:15,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-11-29 04:02:15,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2023-11-29 04:02:15,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2023-11-29 04:02:15,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2023-11-29 04:02:15,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:02:16,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:02:16,020 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:02:16,022 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:02:16,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:02:16 BoogieIcfgContainer [2023-11-29 04:02:16,025 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:02:16,025 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:02:16,025 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:02:16,025 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:02:16,026 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:02:10" (3/4) ... [2023-11-29 04:02:16,028 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 04:02:16,034 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-29 04:02:16,035 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 04:02:16,035 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 04:02:16,035 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 04:02:16,111 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:02:16,112 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 04:02:16,112 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:02:16,112 INFO L158 Benchmark]: Toolchain (without parser) took 6833.04ms. Allocated memory was 146.8MB in the beginning and 182.5MB in the end (delta: 35.7MB). Free memory was 99.3MB in the beginning and 110.3MB in the end (delta: -11.1MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2023-11-29 04:02:16,113 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 146.8MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:02:16,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.21ms. Allocated memory is still 146.8MB. Free memory was 99.3MB in the beginning and 83.6MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 04:02:16,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.08ms. Allocated memory is still 146.8MB. Free memory was 83.1MB in the beginning and 81.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:02:16,114 INFO L158 Benchmark]: Boogie Preprocessor took 39.85ms. Allocated memory is still 146.8MB. Free memory was 81.5MB in the beginning and 79.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:02:16,114 INFO L158 Benchmark]: RCFGBuilder took 328.05ms. Allocated memory is still 146.8MB. Free memory was 79.4MB in the beginning and 66.3MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 04:02:16,115 INFO L158 Benchmark]: TraceAbstraction took 5985.92ms. Allocated memory was 146.8MB in the beginning and 182.5MB in the end (delta: 35.7MB). Free memory was 65.3MB in the beginning and 115.3MB in the end (delta: -49.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:02:16,115 INFO L158 Benchmark]: Witness Printer took 86.64ms. Allocated memory is still 182.5MB. Free memory was 114.5MB in the beginning and 110.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:02:16,117 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 146.8MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.21ms. Allocated memory is still 146.8MB. Free memory was 99.3MB in the beginning and 83.6MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.08ms. Allocated memory is still 146.8MB. Free memory was 83.1MB in the beginning and 81.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.85ms. Allocated memory is still 146.8MB. Free memory was 81.5MB in the beginning and 79.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 328.05ms. Allocated memory is still 146.8MB. Free memory was 79.4MB in the beginning and 66.3MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5985.92ms. Allocated memory was 146.8MB in the beginning and 182.5MB in the end (delta: 35.7MB). Free memory was 65.3MB in the beginning and 115.3MB in the end (delta: -49.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 86.64ms. Allocated memory is still 182.5MB. Free memory was 114.5MB in the beginning and 110.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 497 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 497 mSDsluCounter, 476 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 322 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 669 IncrementalHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 154 mSDtfsCounter, 669 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 100 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=10, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 84 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 244 ConstructedInterpolants, 0 QuantifiedInterpolants, 2296 SizeOfPredicates, 17 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 22 InterpolantComputations, 8 PerfectInterpolantSequences, 29/57 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 04:02:16,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df82afc2-1866-4b2b-bc83-a31885ca22ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE